| Effects of positive interactions, size symmetry of competition and abiotic stress on self-thinning in simulated plant populations. | |
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MedLine Citation:
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PMID: 20643802 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND AND AIMS: Competition drives self-thinning (density-dependent mortality) in crowded plant populations. Facilitative interactions have been shown to affect many processes in plant populations and communities, but their effects on self-thinning trajectories have not been investigated. METHODS: Using an individual-based 'zone-of-influence' model, we studied the potential effects of the size symmetry of competition, abiotic stress and facilitation on self-thinning trajectories in plant monocultures. In the model, abiotic stress reduced the growth of all individuals and facilitation ameliorated the effects of stress on interacting individuals. KEY RESULTS: Abiotic stress made the log biomass-log density relationship during self-thinning steeper, but this effect was reduced by positive interactions among individuals. Size-asymmetric competition also influenced the self-thinning slope. CONCLUSIONS: Although competition drives self-thinning, its course can be affected by abiotic stress, facilitation and competitive symmetry. |
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Authors:
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Cheng-Jin Chu; Jacob Weiner; Fernando T Maestre; You-Shi Wang; Charles Morris; Sa Xiao; Jian-Li Yuan; Guo-Zhen Du; Gang Wang |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-07-19 |
Journal Detail:
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Title: Annals of botany Volume: 106 ISSN: 1095-8290 ISO Abbreviation: Ann. Bot. Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-27 Completed Date: 2011-01-12 Revised Date: 2013-01-21 |
Medline Journal Info:
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Nlm Unique ID: 0372347 Medline TA: Ann Bot Country: England |
Other Details:
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Languages: eng Pagination: 647-52 Citation Subset: IM |
Affiliation:
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MOE Key Laboratory of Arid and Grassland Ecology at Lanzhou University, Lanzhou, China. cjchu@lzu.edu.cn |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Ecosystem* Models, Theoretical Plant Development* Plants / anatomy & histology* Population Density |
| Grant Support | |
ID/Acronym/Agency:
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242658//European Research Council |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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